Improvement in mortar-mills



iE/ff? NA PETERS, FHDTD-UTHOGRAPHER, WASHINGTON, D. C.

v.its applicationto use.`

d distinti Bietet y Laim Poem No. 105,840, dated July 20,1870.

1 IMPROVEMENT 1N MoRTAR-Mmns.

The: Schedule :referredto in' these Letters Patent and making 'part of the same.

To all whom `it omyconcorn:

1Be it known that I,LEMAN B. PITCHER, of the town of Salina, in the `county of Onondaga. and State of New York, haveinvented a new and useful Im- -provement relating to a @Working and Sitting-Cylinder;" andIv do hereby declare that the following is a full, clear, and exact` description of 'the same, reference being had to the annexed drawings makingA apartofthis specification, wherein- Figure 1 representsa perspective view, and

"Figure 2 a sectional view thereof.

The" letters used represent corresponding parts whenever used.k l-

To enable others skilled inthe art to make auduse my invention, I will proceed to describe the same 'and In Letters `Patent of theUnited States granted to me, 27th day of November, 1866, and numbered 60,055, a circular' or hooped-shaped sieve is described, to sift lime-paste.` y

The means thereinI set forth for siftinglime-paste is defective, because thesieve therein -described was hoop-shaped, and, being made ou a line with the cylinder, the bottom ofthe sieve isalways o n a level,

and therefore has no` power in and 'of itself to 'dischargethe lime-dregs. i Therefore the dregs had to be'- -takeu awayby 4some assisting means, and for that purpose a spout wasgused.

The improvement which Lhave made conslstsin making the revolving sieveB inv aV laring'or spreading form, so tllatthe bottomV of sieve B will always `slope downward and outward; by which form and means, the dings, 'as they accrue ou the revolving flaring sieve B, andare carried .partly upby-the sieve, will roll or` slide `downwardly and outwardly, and, in and` of themselves, 'by the motion and shape of the sieve B, work-out and be dischargedpwithout other` assistance. In this' way, the sieve B is kept comparatively-clean where the paste flows onto it.

The fworkiug and sifting cylinder `A and B, is a compound machine. .Lhe cylinder A, externally, is in the' form of a truncated cone, or it may be made' withA parallel sides, madeof` wood and iron or other materials',formed with staves and hoops, or otherwise mouutedou spider arms and rims, made` in `usual form. TheV length of the cylinder A `is two feet, more or less. The diameter of thelarger end is two feet and six inches, more or less, and of the smaller end, twofeet, `more or less, provided with a head-piece, generally, inthe larger end; yet for some purposes` it isibest to be in the smaller end, with al hole in the center of-said'head-piece, fifteen inches in diameter, more or 1ess.`, The oylinderA-isarmed or provided with three hundred spikes, more. or less, of the size and length of twelve-penny fence-nails, larger or smaller, standing inwardlv. The arming or providing may be varied oromitted.

larger and outer end, more or less, and two feet atl the smaller end, more or less, formed ot' wire-cloth or perforated metal, supported at the outer end or spider arms and rims. llhe meshes or holes in the sieve B are one hundred to the square inch for sifting lime-paste, more or less. The meshes may be larger or smaller, and of any shape, according to the work to be performed. The small end of sieve" B' is attached by bolts and screws to the open end of the cylinder A, or otherwise, as may be'reqnired, forming the working and sifting cylinder Aand B. The whole is mounted and revolved ou a non-revolving bent shaft, Asubstantially inl the manner and for the. reasons set forth in Letters Patent of the United States, numbered 80,212, or it may' be mounted and revolved as set forth in-Lctters Patent of the United States, numbered 70,742 or 60,055. Being a flaring and revolving sieve, a -finer mesh 'can successfully be washing or scouring sand and `gravel-,for niortars, `cernents, sidewalks orv i'ooing, or :for .anypurpose -where itis desirable to wash or clean materials, and

afterward separate `or not the fine from the coarse with or without water; -or for drying l,or cooling grain or other similar articles, with or withontartificial heat or currents of air; or for reducing, working, and sifting clay, for brick, tile, and pottery work.` rlhe clay, being softened with water, is put in cylinder A,

`where the teeth on spikes will reduce the mass to a duid paste, more water being added when' required, and as it passes onto and through the sieve the stone or dregs are takenV out, leavinga ne clay-paste, easily converted into a putty or dough, for the purposes named, or for like purposes. '.What I claim asmy invention, and desire to secure by Lettersl Patent of the United States, is

The sieve attachment' B, made in a daring or spreading for`n1,as`an improvement on the hooped shaped form, described in Letters Patent of the United States dat-ed 27 th November, 1866, and numbered 60,055,iu combination with the cylinder A, substantially in the manner and for thezpurpose above described.

` LEMAN B. PITCHER.

Witnesses D. C. MARKHAM, j

O.`W. SMITH. 

